A study for the effective use of low-temperature waste heat - Improvement in the efficiency of energy by applying the thermoacoustic phenomenon -

为了有效地利用低温余热，我们用热声现象研究了能源效率。我们提出了三种方法。首先是声场的逼近。第二个是堆栈的方法。三是热泄漏的处理方法。在第一种方法中，我们提出了相位调节器、扩展相位调节器、子环、薄膜等，发现在接近行波相位差的情况下，原动机的能效得到提高。在第二种方法中，我们研究了电堆安装位置和电堆半径对效率的影响。我们认识到无量纲参数的omega tau的有效性。在第三种方法中，我们研究了原动机的热泄漏。从结果中发现，热泄漏比预期的要大。

We have investigated for energy efficiency with thermoacoustic phenomena for the effective utilization of low temperature waste heat. We suggested three approaches. The first is the approach of the sound field. The second is the approach for the stack. The third is the approach for the heat leak. In the first approach, we proposed phase adjuster, expanding phase adjuster, sub-loop, membrane, and etc. It was found that the energy efficiency is increased by close to traveling wave phase difference in the prime mover. In the second approach, we investigated the effect on efficiency for the installation position of the stack and the radius of the stack. We recognized the validity of omega tau of dimensionless parameters. In the third approach, we investigated the heat leak of prime mover. It was found that the heat leak is larger than expected from the results.